The Conometric Concept: Definitive Fixed Lithium Disilicate Restorations Supported by Conical Abutments. Issue 7 (10th October 2016)

• Record Type: Journal Article
• Authors: Degidi, Marco; Nardi, Diego; Sighinolfi, Gianluca; Piattelli, Adriano
• Is Part Of: Journal of prosthodontics. Volume 27:Issue 7(2018)
• Page Start: 605
• Page End: 610
• Publication Date: 2016-10-10
• Subjects: Conometric concept -- conical coupling -- Morse cone -- lithium disilicate; Prosthodontics -- Periodicals; Dental implants -- Periodicals; Dentistry -- Periodicals; 617.69
• DOI: 10.1111/jopr.12548
• Languages: English
• ISSNs: 1059-941X

Abstract

Abstract: Purpose: The use of the conical coupling connection to support definitive restorations was evaluated in cases involving full acrylic resin or hybrid acrylic resin‐composite prostheses. The aim of this study was to evaluate the performance of definitive fixed partial prostheses made with lithium disilicate and supported by coupling connection abutments and healed implants. Materials and Methods: The prostheses were placed in the posterior regions of partially edentulous patients; 65 patients received fixed lithium disilicate restorations splinted with conical coupling connections to two implants. Implants were placed into healed sites and fresh extraction sockets. The prostheses were placed after healing periods of 3 months: restorations were followed yearly for 3 years. At each follow‐up visit, peri‐implant bone levels and pocket depths were recorded. Esthetic, functional, and biologic United States Public Health Services (USPHS) parameters modified by the FDI World Dental Federation study design were assessed at the last follow‐up appointments. Results: Two prostheses (3.07%) fractured: one was related to framework design error; one was caused by a car accident. Three patients reported small chips: these restorations were immediately polished. No significant difference involving peri‐implant bone and probing levels between the experimental times were found. None of the prostheses became loose. Conclusions: The results of this research indicated that abutment‐prostheses coupling connections were successful within the timeframe of this study.